🚀 Java & DSA Mastery Repository

Welcome to the Java & Data Structures & Algorithms (DSA) Mastery Repository! 🎯 This repository is a curated collection of concepts, implementations, and problem-solving approaches in Object-Oriented Programming (OOP) and DSA using Java. Whether you're a beginner or an experienced developer, you'll find something valuable here! 🔥

📂 Folder Structure

🔷 OOPS (Object-Oriented Programming in Java)

Master the four pillars of OOP: Abstraction, Encapsulation, Inheritance, and Polymorphism.

📌 Key Topics:

• Abstraction/ - Implementing abstract classes and interfaces.
• Encapsulation/ - Data hiding and access modifiers.
• Inheritance/ - Understanding parent-child relationships.
• Polymorphism/ - Method overloading and overriding.
• Singleton/ - Implementing the Singleton design pattern.
• Wrapper.java - Exploring wrapper classes in Java.
• Garbage.java - Memory management and garbage collection.
• Generics/ - Type safety and reusability.
• ExceptionHandling/ - Handling runtime errors effectively.
• Access/ - Understanding access specifiers.
• Contructor.java & Contructor.class - Understanding constructors and their usage.

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🔷 DSA (Data Structures & Algorithms in Java)

Master problem-solving techniques and optimize your code with efficient algorithms!

📌 Key Topics:

• Sorting & Searching: Binary Search, Selection Sort, Bubble Sort, and more!
• StackAndQueues/ - Implementation of stacks & queues from scratch.
  • CustomStack.java - Implementation of stack.
  • CustomQueue.java - Implementation of queue.
  • DynamicStack.java - Stack with dynamic memory allocation.
  • InBuildExamples.java - Built-in Java stack & queue examples.
  • StackException.java - Custom exception handling in stacks.
• Binary Search Variants:
  • BinarySearch.java - Standard binary search implementation.
  • OrderAgnosticBinarySearch.java - Works on both sorted (ascending/descending) arrays.
  • RotatedBinarySearch.java - Searching in rotated sorted arrays.
• 2D Arrays & Matrices:
  • SearchIn2DArray.java - Searching in a matrix.
  • RowColMatrix.java - Matrix traversal techniques.
  • SortedMatrix.java - Searching in a sorted matrix.
• Mathematical & Logical Problems:
  • EvenDigits.java - Finding numbers with even digits.
  • FindMin.java - Finding the minimum number in an array.
  • FindPeakInMountain.java - Finding peak elements in mountain arrays.
• Linked Lists: Implementation of singly, doubly, and circular linked lists.

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🔷 Leetcode Challenges & Competitive Programming

🚀 Boost your coding skills with real-world problem-solving!

• Solutions to popular Leetcode problems categorized by topic.
• Efficient approaches with code optimization.

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🚀 Why Should You Use This Repository?

✅ Well-structured Code: Organized and modularized for easy understanding.
✅ Real-world Implementations: Practical examples of OOP and DSA concepts.
✅ Beginner to Advanced: Covers everything from basic to advanced topics.
✅ Interview Preparation: Great resource for coding interviews and competitive programming.

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📌 How to Use

1. Clone this repository:

   git clone https://github.com/Vishwathma2004/DSA_IN_JAVA.git

2. Navigate to the desired section and start exploring.
3. Run Java files using:

   javac FileName.java
   java FileName

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⭐ Contribute & Support

Feel free to contribute by adding more solutions, improving existing ones, or fixing any issues. Fork this repo, make your changes, and submit a PR! 😊

If you find this repository helpful, give it a ⭐!

🔗 Follow me on GitHub for more awesome content!

🚀 Happy Coding! 🎯